title: Shape induced symmetry in self-assembled mesocrystals of iron oxide nanocubes.
abstract: Grazing incidence small-angle scattering and electron microscopy have been used to show for the first time that nonspherical nanoparticles can assemble into highly ordered body-centered tetragonal mesocrystals. Energy models accounting for the directionality and magnitude of the van der Waals and dipolar interactions as a function of the degree of truncation of the nanocubes illustrated the importance of the directional dipolar forces for the formation of the initial nanocube clusters and the dominance of the van der Waals multibody interactions in the dense packed arrays.
authors.affiliation: Jülich Centre for Neutron Science JCNS and Peter Grünberg Institut PGI, JARA-FIT, Forschungszentrum Jülich, 52425 Jülich, Germany.
authors.forename: Sabrina
authors.initials: S
authors.lastname: Disch
authors.forename: Erik
authors.initials: E
authors.lastname: Wetterskog
authors.forename: Raphaël P
authors.initials: RP
authors.lastname: Hermann
authors.forename: German
authors.initials: G
authors.lastname: Salazar-Alvarez
authors.forename: Peter
authors.initials: P
authors.lastname: Busch
authors.forename: Thomas
authors.initials: T
authors.lastname: Brückel
authors.forename: Lennart
authors.initials: L
authors.lastname: Bergström
authors.forename: Saeed
authors.initials: S
authors.lastname: Kamali
mesh_terms: D003198:Computer Simulation; D004735:Energy Transfer; D005290:Ferric Compounds / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008956:Models, Chemical; D008958:Models, Molecular; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D013499:Surface Properties
chemical_list: D005290:Ferric Compounds; D046911:Macromolecular Substances; C000499:ferric oxide